Temperature estimation device, temperature estimation method, program, and storage medium

Abstract

A temperature of a power device to which a power storage device is attached is estimated on the basis of a temperature detected by a temperature detector provided in a power storage device detachably held in the power device.

What is claim is: 
     
         1 . A temperature estimation device comprising:
 an estimator configured to estimate a temperature of a power device to which a power storage device is attached on the basis of a power storage device temperature that is a temperature detected by a temperature detector provided in the power storage device detachably held in the power device,   wherein the power device includes a housing having an accommodation unit configured to accommodate at least a part of the power storage device, and   the estimator estimates an internal temperature inside of the housing on the basis of the power storage device temperature detected by the temperature detector,   wherein the housing includes a plurality of accommodation units configured to respectively accommodate power storage devices, and   the estimator estimates the internal temperature on the basis of the temperature detected by the temperature detector provided in the power storage device that is electrically operating among the power storage devices accommodated in the plurality of accommodation units, and   wherein, when a plurality of power storage devices that are electrically operating are present, the estimator estimates the internal temperature on the basis of a plurality of power storage device temperatures detected by temperature detectors provided in the plurality of power storage devices.   
     
     
         2 . The temperature estimation device according to  claim 1 , wherein the estimator estimates the internal temperature on the basis of an average value of the plurality of power storage device temperatures. 
     
     
         3 . The temperature estimation device according to  claim 1 , wherein the estimator estimates the internal temperature on the basis of a highest power storage device temperature among the plurality of power storage device temperatures. 
     
     
         4 . The temperature estimation device according to  claim 1 , wherein the estimator estimates a temperature of air inside of the housing within the internal temperature inside of the housing. 
     
     
         5 . The temperature estimation device according to  claim 1 ,
 wherein the power device includes a housing having an accommodation unit configured to accommodate at least a part of the power storage device, and   the estimator estimates an external temperature outside of the housing on the basis of the power storage device temperature detected by the temperature detector.   
     
     
         6 . The temperature estimation device according to  claim 5 ,
 wherein the housing includes a plurality of accommodation units configured to respectively accommodate power storage devices, and   the estimator estimates the external temperature on the basis of the power storage device temperature detected by the temperature detector provided in the power storage device that is not electrically operating among the power storage devices accommodated in the plurality of accommodation units.   
     
     
         7 . The temperature estimation device according to  claim 6 , wherein the estimator estimates the external temperature on the basis of the power storage device temperature detected by the temperature detector provided in the power storage device in which a prescribed period of time has elapsed from a previous operation end time point among power storage devices that are not electrically operating. 
     
     
         8 . The temperature estimation device according to  claim 6 , wherein, when there is no power storage device that is not electrically operating, the estimator estimates the external temperature on the basis of the power storage device temperature detected by the temperature detector provided in the power storage device having a smallest total operation amount within a prescribed period in a past among the power storage devices that are electrically operating. 
     
     
         9 . The temperature estimation device according to  claim 1 ,
 wherein the estimator further estimates an external temperature outside of the housing of the power device on the basis of the power storage device temperature detected by the temperature detector, and   the power device further includes a countermeasure unit configured to determine an abnormal change in the power device or cope with an abnormal change in the power device on the basis of the internal temperature and the external temperature estimated by the estimator.   
     
     
         10 . The temperature estimation device according to  claim 1 , wherein the temperature detector is disposed inside of the power storage device so that the temperature detector is located further inward than an outer edge of the housing in a state in which the power storage device is accommodated in the accommodation unit. 
     
     
         11 . The temperature estimation device according to  claim 1 ,
 wherein the housing includes a connected path configured to connect an inside and an outside of the housing, and   the estimator determines that an abnormal change has occurred in the connected path, provides a notification indicating that the abnormal change has occurred in the connected path, or suppresses an operating state of the power device when the internal temperature is greater than or equal to a prescribed temperature or when a difference between the internal temperature and a reference temperature is greater than or equal to a prescribed value.   
     
     
         12 . The temperature estimation device according to  claim 11 ,
 wherein the connected path includes a purification device inside of the housing, and   wherein the estimator determines that an abnormal change has occurred in the purification device, provides a notification indicating that the abnormal change has occurred in the purification device, or suppresses an operating state of the power device when the internal temperature is greater than or equal to the prescribed temperature or when the difference between the internal temperature and the reference temperature is greater than or equal to the prescribed value.   
     
     
         13 . The temperature estimation device according to  claim 11 , wherein the estimator estimates the internal temperature on the basis of a temperature detected by the temperature detector provided in the power storage device that is electrically operating. 
     
     
         14 . A temperature estimation method comprising steps of:
 acquiring a power storage device temperature that is a temperature detected by a temperature detector provided in a power storage device detachably held in a power device; and   estimating a temperature of the power device to which the power storage device is attached on the basis of the power storage device temperature,   wherein the power device includes a housing having an accommodation unit configured to accommodate at least a part of the power storage device, and   wherein the housing includes a plurality of accommodation units configured to respectively accommodate power storage devices, and   temperature estimation method further comprising steps of:   estimating an internal temperature inside of the housing on the basis of the power storage device temperature detected by the temperature detector:   estimating the internal temperature on the basis of the temperature detected by the temperature detector provided in the power storage device that is electrically operating among the power storage devices accommodated in the plurality of accommodation units; and   wherein, when a plurality of power storage devices that are electrically operating are present, estimating the internal temperature on the basis of a plurality of power storage device temperatures detected by temperature detectors provided in the plurality of power storage devices.   
     
     
         15 . A non-transitory computer readable storage medium storing a program for causing a computer to execute the temperature estimation method according to  claim 14 . 
     
     
         16 . A temperature estimation method comprising steps of:
 acquiring a power storage device temperature that is a temperature detected by a temperature detector provided in a power storage device detachably held in a power device; and   estimating a temperature of the power device to which the power storage device is attached on the basis of the power storage device temperature,   wherein the power device includes a housing having an accommodation unit configured to accommodate at least a part of the power storage device, and   wherein the power device further includes an operation unit electrically connected to the power storage device,   temperature estimation method further comprising steps of:   estimating an internal temperature inside of the housing on the basis of the power storage device temperature detected by the temperature detector; and   estimating the internal temperature on the basis of the power storage device temperature detected by the temperature detector when the power storage device is in a charging/discharging state in which the power storage device is discharged with respect to the operation unit or charged by the operation unit.   
     
     
         17 . A non-transitory computer readable storage medium storing a program for causing a computer to execute the temperature estimation method according to  claim 16 . 
     
     
         18 . A temperature estimation device comprising:
 an estimator configured to estimate a temperature of a power device to which a power storage device is attached on the basis of a power storage device temperature that is a temperature detected by a temperature detector provided in the power storage device detachably held in the power device,   wherein the power device includes a housing having an accommodation unit configured to accommodate at least a part of the power storage device, and   the estimator estimates an internal temperature inside of the housing on the basis of the power storage device temperature detected by the temperature detector,   wherein the power device further includes an operation unit electrically connected to the power storage device, and   the estimator estimates the internal temperature on the basis of the power storage device temperature detected by the temperature detector when the power storage device is in a charging/discharging state in which the power storage device is discharged with respect to the operation unit or charged by the operation unit.